The opening announcer informs us that this particular broadcast was chosen "in light of recent events". He is referring to the 2020 outbreak of the Coronavirus, or Wuhan flu.
"Lux Radio Theater" adapted The Story of Louis Pasteur (1936) for radio in a November 23, 1936 broadcast. However, despite the podcast title, ComicWeb presents the April 13, 1946 "Academy Award" adaptation of the same movie, not the "Lux Radio" version. Both versions star Paul Muni, who reprises the title role from the movie.